Product Overview IC card vertical cold water (drinking water) the use of advanced radio frequency card as data storage and transmission media, the control valve from the base table are integrated, compact structure, high reliability, the water meter is the use of modern microelectronic technology, smart IC card technology for water metering and water meter data transfer and new settlement transactions. The product has advanced technology, superior performance, reasonable structure, accurate, reliable and a series of advantages. The product complies with GB / T778-2007, CJ / T133-2007 and CJ266-2008 standards. Features 1, microcomputer control technology as the core, highly integrated, stable and reliable. 2, with prepaid users to purchase water, water, water purchased is exhausted, the meter automatically off valve before opening the card only after the user to purchase water valve. 3, using liquid crystal display, clear and intuitive display, can display the remaining water, the cumulative water consumption, valve status, low battery tips, wrong card tips and other information, while retaining the character wheel and pointer meter display. 4, the battery voltage monitoring, automatic alarm after the internal battery voltage off valve, and water with anti-theft feature, and prompts to replace the battery, the battery power data is not lost long-term preservation. 5, the valve automatically maintenance functions: water meter does not normally lead to monthly automatic opening and closing valve closing is secondary, avoid water, sediment and impurities clogged valves. 6, water alarm function: When the remaining water reaches the set alarm value, the meter automatically off valve, to remind users have little water left in the water, please buy water, then the user to brush their own user card can continue to water know the table remaining water is zero, the meter will shut the valve without water again. 7, non-contact IC card (RF card) technology: the wireless transmission of data, solve card waterproof, moisture, attack problems. 8, fully sealed design, each part of the product design using physical seal, do not use any chemical latex, use O-type gasket seal between the upper and lower casings, excellent sealing effect, moisture-proof, waterproof, dustproof performance strong, work stable. The main technical parameters nominal diameter (DN15) 15mm (DN20) 20mm (DN25) 25mm measurement level 2 2 2 Unit 0.1m3 0.1m3 0.1m3 turndown ratio (Q3 / Q1) 80 80 80 maximum flow rate (Q4) 3 m3 / h 5 m3 / h 7m3 / h common flow (Q3) 2.5m3 / h 4m3 / h 6.3m3 / h minimum flow (Q1) 0.03 m3 / h 0.05 m3 / h 0.07m3 / h Dimensions 165 × 85 × 120 195 × 85 × 120 225 × 85 × 120 connecting thread D: R1 / 2B D: G3 / 4B D: R3 / 4B D: G1B D: R1B D: G5 / 4B minimum reading maximum reading of 99999 m3 0.0001 m3 Alarm off valve without water Alarm temperature 0.1 ℃ ~ 30 ℃ Working pressure 0.03MPa ~ 1.0 MPa battery life ≥ 6 Grade E1 Electromagnetic Compatibility maximum permissible error from minimum flow to excluding transitional flow in the lower zone of the maximum permissible error ± 5%. Including the transitional flow from the upper zone of the maximum flow of the maximum permissible error of ± 3%